For some reason, the file brewsheet.ps, as it appears on mthvax, has an
error: the character that is supposed to print as a box (for checking off
options) instead appears as a "member of" character (curved E). You can
easily fix this by:

load brewsheet.ps into your favorite editor. Find the line that looks
like this:

[ 300 ] /lasy10.300 @newfont

This line has the first occurrence of lasy10.300 in the file. Two lines
down are two lines that look like this (where ... means I have left some
characters out):
[<007FF801FFF...
...7FF8> 24 26 -3 3 27.673] 50 @dc